There --(be)a telephone call for you five mintues ago

1.There was a telephone call for you five mintues ago.五分钟前是过去时态,你要选择过去时.
2.These trees in our school ________ten years old.
A.were planted B.are planted C.planted D.was planted
这句的话考虑这些树是复数,并且树是被种的,已经种了有十年了,为过去时,综合考虑答案为A.